diff --git a/.travis.yml b/.travis.yml
index 4b456d3..ed66f0c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,6 @@
 language: ruby
+env:
+  - CPLUS_INCLUDE_PATH=/usr/include/atlas C_INCLUDE_PATH=/usr/include/atlas
 rvm:
   - 1.9.3
   - 2.0
@@ -10,3 +12,4 @@ script: bundle install && bundle exec rake spec
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -y libgsl0-dev
+  - sudo apt-get install -qq libatlas-base-dev
diff --git a/minimization.gemspec b/minimization.gemspec
index 045be98..139bad7 100644
--- a/minimization.gemspec
+++ b/minimization.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.summary = "A suite for minimization in Ruby"
 
   s.add_runtime_dependency 'text-table', '~> 1.2'
-  s.add_runtime_dependency 'rb-gsl', '~> 1.2'
+  s.add_runtime_dependency 'gsl-nmatrix', '~> 1.15'
 
   s.add_development_dependency 'rake', '~> 10'
   s.add_development_dependency 'bundler', '~> 1.3'